/*
 *  Copyright 2013 HCIWriter
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.hci.writer.client.activity;

import com.google.gwt.activity.shared.AbstractActivity;
import com.google.gwt.core.client.GWT;
import com.google.gwt.event.shared.EventBus;
import com.google.gwt.place.shared.Place;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.AcceptsOneWidget;
import com.hci.writer.client.ClientFactory;
import com.hci.writer.client.Storage;
import com.hci.writer.client.StorageService;
import com.hci.writer.client.StorageServiceAsync;
import com.hci.writer.client.place.SavePlace;
import com.hci.writer.client.ui.SaveView;

public class SaveActivity extends AbstractActivity implements SaveView.Presenter {

	private ClientFactory clientFactory;
	private SaveView saveView;
	
	private final StorageServiceAsync storageService = GWT.create(StorageService.class);
	
	public SaveActivity(SavePlace place, ClientFactory clientFactory) {
        this.clientFactory = clientFactory;
    }
	
	@Override
	public void start(AcceptsOneWidget containerWidget, EventBus eventBus) {
		this.saveView = clientFactory.getSaveView();
		this.saveView.setPresenter(this);
        containerWidget.setWidget(this.saveView.asWidget());
        
        datenSpeichern();
	}

	private void datenSpeichern() {
		storageService.store(Storage.participant, new AsyncCallback<Boolean>() {
			@Override
			public void onFailure(Throwable caught) {
				caught.printStackTrace();
				Window.alert("Fehler beim Übertragen der Daten. Es wird erneut probiert.");
				datenSpeichern();
			}

			@Override
			public void onSuccess(Boolean result) {
				if(result) {
					Window.alert("Die Ergebnisse wurden erfolgreich eingesammelt.");
					
					String key = Storage.participant.getKey();

					// Add some padding to the participant key. LimeSurvey seems to not like to short keys.
					/*
 					while(key.length() < 5) {
						key = "a" + key;
					}
					 */
					
					Window.Location.replace("http://code.google.com/p/hciwriter/wiki/LandingPage?participantId=" + key);
				} else {
					Window.alert("Fehler beim einsammeln.");
				}
			}
		});
	}
	
	@Override
	public void goTo(Place place) {
		clientFactory.getPlaceController().goTo(place);
	}
}
